Authors:Andrea Mura, Francesca Curà, and Graziano Curti
The object of the present paper is the dynamic analysis of plane structures with FLD viscoelastic layers. This study has been performed by utilizing a FEM Code (Viscoplate) and a hybrid element developed for this aim. In particular partial damping treatments have been considered and compared each other in terms of damping performances. Different viscoelastic distributions have been analyzed in order to evaluate how the patch design may influence the damping performances of the coupled structure. Damping parameters have been obtained by means of the traditional Modal Strain Energy (MSE) method and by two new modified versions (new modified MSE and corrected MSE).
Authors:Ying Yang, Shijie Hao, Pengpeng Qiu, Fanpeng Shang, Wenli Ding, and Qiubin Kan
Salicylaldimine functionalized SBA-15 hybrid mesoporous material was synthesized by post-grafting of salicylaldehyde modified
3-aminopropyltriethoxysilane and followed by introducing Cu(II) ions into the hybrid material via a ligand exchange reaction.
The prepared catalyst was characterized by means of XRD, N2 adsorption/desorption, SEM, FT-IR, UV–vis spectroscopy, EPR and XPS techniques as well as ICP-AES and elemental analysis
measurements. The solid catalyst was evaluated in the oxidation of styrene with H2O2 as the oxidant under mild conditions, and the reaction parameters (the molar ratio of styrene/H2O2, amount of catalyst, temperatures, solvents, alkaline additive) were investigated and optimized for the oxidation of styrene.
The optimal conversion (77.1%) and yield of styrene oxide (60.0%) were obtained at 80 °C using CH3CN as the solvent under basic conditions. Moreover, the covalently anchored Cu(II) salicylaldimine complex showed good recoverability
and high stability against leaching of active copper(II) species.
King oyster mushroom (Pleurotus eryngii) is a worldwide cultivated mushroom of appreciated nutritional and medicinal quality. Aims of these investigations were to give new comparative data for the better evaluation of P. eryngii. Results of our investigations can be summarized as follows:
P. eryngii has higher (crude protein, crude fat) or at least the same concentrations (chitin and total carbohydrate) of organic nutritive components than the common cultivated Pleurotus hybrid (‘HK-35’). Regarding the classical protein fractions: albumins are the highest content in both mushrooms, but the quantity and the proportion in P. eryngii is better than in ‘HK-35’ hybrid. Occurrence and proportion of protein fractions is more valuable in P. eryngii, while the NPN contents of both mushrooms are the same.
The investigated soluble oligo- and polysaccharides were present in high amounts in both mushrooms, but the free radical scavenging activity seems to be markedly higher in king oyster mushroom, making it more valuable. Mineral compositions of both species are similarly beneficial, but P. eryngii has basically higher P and lower K levels. More intensive cultivation and use of P. eryngii is clearly recommended.
Szendrői E. A robust hybrid method for the multimode resource-constrained project scheduling problem, Pollack Periodica , Vol. 5, No. 3, 2010, pp. 175–184, DOI: 10.1556/Pollack.5.2010.3.15.
In this paper, a comparison of parallel beam-tracing methods is presented and an original parallel domain decomposition method is proposed to solve numerical acoustic problems. A hybrid method between the ray-tracing and the beam-tracing method is first introduced. Then, classical parallelization methods are exposed and compared on shared and distributed memory architectures. Finally, a new parallel method based on domain decomposition principles is proposed. This method allows to handling large-scale problems better than other existing methods when taking into account the input/output and preprocessing steps. Parallel numerical experiments, carried out on a real world problem -namely the acoustic pollution analysis within a large city-illustrate the performance of this new domain decomposition method.
During the last decades comprehensive data in the field of chemistry, biology and technology of spice red pepper (paprika) have rapidly accumulated. In food science and technology the research work focused on, among others, developing accurate, simple, rapid, reliable, and of high sensitivity analytical methods to determine paprika pigments and antioxidants. The research concentrated mainly on the development and optimisation of liquid chromatographic methods to determine the carotenoids, tocopherols (vitamin E) and ascorbic acid (vitamin C). In the area of plant biology/physiology characterisation of ripening of traditional and new cultivars and hybrids of spice red pepper was the main objective of research work carried out by research groups in different countries. In the field of paprika processing and technology special interest has been given to the effect of different drying technologies on the quality components of paprika and their stability during drying, milling and storage. The aim of many research programs was to produce paprika with high colouring capacity, antioxidant content and storage stability. The objective of this article is to review the research works done on spice red pepper in the Central Food Research Institute, Budapest.
Authors:D. Fekete, G. Balázs, V. Bőhm, E. Várvölgyi, and N. Kappel
The objective of our study was to analyse the results of two measuring methods (sensory evaluation and electronic tongue) and to find differences in taste between grafted and non-grafted watermelon fruit. The trained sensory panel evaluated in two years three differently treated watermelon fruit. The studied fruit samples were produced on the same growing-areas in both years but with different growing technologies. The experiment used the non-grafted/self-rooted watermelon as control sample, while the other two treatments were grafting on two rootstock types: a Lagenaria and an interspecific squash hybrid rootstock. The electronic tongue measurement showed that it is the environment/growing technology that mainly determines the characteristics of the fruit quality, not grafting. The two measurement methods can complement each other in a detailed and practical way, as technology and growing area strongly influence the quality of watermelon fruit. The research also showed that it is possible to have similar watermelon fruit quality, independently from the used rootstock type.